Sulfidation Kinetics of Fe25Cr20Ni2.4Si in H<sub>2</sub>S-H<sub>2</sub> Atmosphere

Zhou Chungen; Huang Zhenzhong; Zhu Rizhang

doi:10.13374/j.issn1001-053x.1990.02.026

Volume 12 Issue 2

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Zhou Chungen, Huang Zhenzhong, Zhu Rizhang. Sulfidation Kinetics of Fe25Cr20Ni2.4Si in H2S-H2 Atmosphere[J]. Chinese Journal of Engineering, 1990, 12(2): 137-141. doi: 10.13374/j.issn1001-053x.1990.02.026

Citation:

Zhou Chungen, Huang Zhenzhong, Zhu Rizhang. Sulfidation Kinetics of Fe25Cr20Ni2.4Si in H₂S-H₂ Atmosphere[J]. Chinese Journal of Engineering, 1990, 12(2): 137-141. doi: 10.13374/j.issn1001-053x.1990.02.026

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Sulfidation Kinetics of Fe25Cr20Ni2.4Si in H₂S-H₂ Atmosphere

doi: 10.13374/j.issn1001-053x.1990.02.026

Dept. of Surface Sci. and Corro. Eng.

Received Date: 1989-04-12
Available Online: 2021-11-15
Publish Date: 2021-11-15

Abstract

Abstract

The sulfidation kinetics of Fe25Cr20Ni2.4Si were carried out at H₂S-H₂ atmospheres by means of continuously-weighing device and non-conti-nuously weighing device. Sulfidation kinetics curves of the alloy obeys parabolic law. The composition and morphology of sulfide scales were also studied. All sulfide scales consist of two surface layers in addition to subscale. Two surface layers are controlled by predominante diffusion of metals. The subscale grow is controlled by the inward diffusion of sulfur.
- kinetics sulfidation,
- corrosion,
- H₂S,
- diffusion